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GB/T 20090.10-2013Information technology—Advanced coding of audio and video—Part 10: Mobile speech and audio (English PDF)

信息技术先进音视频编码第10部分：移动语音和音频

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2013

Implementation date

July 15, 2014

Scope

GB/T 20090.10-2013 is the English-translated version of 信息技术先进音视频编码第10部分：移动语音和音频.

GB/T 20090.10-2013 is the Chinese standard "Information technology—Advanced coding of audio and video—Part 10: Mobile speech and audio". Its scope clause reads: This section GB/T 20090 specifies the mobile voice coding method and an audio signal encoding and decoding method of representation.

This section applies to the following areas. ---Mobile communications; --- Wireless broadband multimedia communications; --- Internet broadband streaming media business. Its clauses include terms and definitions.

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Document preview — GB/T 20090.10-2013

National Standard of the People's Republic of China

ICS: 35.040
Classification: L 71

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Overview
6 Encoder Functional Description
7 Decoder Functional Description
8 allocation descriptor
9 storage, transmission interface format
Appendix A (normative appendix) VAD detector
Appendix B (normative) Digital stereo reference table
Annex C (normative) comfort noise model

1 Scope

This section GB/T 20090 specifies the mobile voice coding method and an audio signal encoding and decoding method of representation.

This section applies to the following areas.

---Mobile communications;

--- Wireless broadband multimedia communications;

--- Internet broadband streaming media business.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 5271.1-2000 Information technology - Vocabulary - Part 1. Basic terminology (eqv ISO /IEC 2382-1.1993)

GB/T 5271.4-2000 Information technology - Vocabulary - Part 4. Organization of data (eqv ISO /IEC 2382-4. 1987)

GB/T 5271.9-2001 Information technology - Vocabulary - Part 9. Data communication (eqv ISO /IEC 2382-9.1995)

GB/T 15526-1995 audio recording PCM codec system

3 Terms and Definitions

GB/T 5271.1-2000, GB/T 5271.4-2000, GB/T 5271.9-2001 and GB/T 15526-1995 defined in

And the following terms and definitions apply to this document.

3.1 Bitrate

The compressed bit stream to the decoder input rate.

3.2 Bitstream

Encoding data represented as a sequence of a certain group of bits.

3.3 Coding

Reads audio samples and produces a coded bit stream of the process.

3.4 Encoder

Specific encoding process implementers.

3.5 Scale factor

Before quantization scale value of a group of factors.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 94 pages — is available in the English PDF.

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